Don't treat sysdate as a builtin (fixes andialbrecht#344).

andialbrecht · andialbrecht · commit 7d91d361ad8c · 2017-07-29T10:28:18.000+02:00
According to Oracle's developer documentation sysdate is a
function that doesn't require any parameters. Hence it's
different from other builtins like int or varchar.
diff --git a/sqlparse/keywords.py b/sqlparse/keywords.py
@@ -639,7 +639,7 @@ def is_keyword(value):
     'SERIAL8': tokens.Name.Builtin,
     'SIGNED': tokens.Name.Builtin,
     'SMALLINT': tokens.Name.Builtin,
-    'SYSDATE': tokens.Name.Builtin,
+    'SYSDATE': tokens.Name,
     'TEXT': tokens.Name.Builtin,
     'TINYINT': tokens.Name.Builtin,
     'UNSIGNED': tokens.Name.Builtin,
